Trondheim weather

Our guide to the weather in Trondheim during August

18

Average high

3

UV Index

125mm

Monthly rainfall

78%

Humidity

Trondheim is a picturesque Norwegian city, boasting a unique mix of cultural attractions and outdoor activities, making it an ideal destination for British tourists; visitors should be aware that August can bring unpredictable weather, so packing a range of clothing is recommended. We've looked at the most up-to-date weather data for Trondheim, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Trondheim weather in August.

What's the temperature like in Trondheim during August?

The temperature reaches around 18℃ during the daytime in August, falling away to 9℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Trondheim during August?

On average, there will be 8 rainy days during the month, amounting to 125.0mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Trondheim during August?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in August. With moderate air temperatures, any breeze will feel cool.

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Weather in Trondheim

Our month-by-month guide to the weather and climate in Trondheim

-2.8

Trondheim weather in

January
-1.7

Trondheim weather in

February
1.8

Trondheim weather in

March
5.8

Trondheim weather in

April
11.6

Trondheim weather in

May
15.8

Trondheim weather in

June
18.6

Trondheim weather in

July
17.8

Trondheim weather in

August
14.0

Trondheim weather in

September
7.5

Trondheim weather in

October
1.9

Trondheim weather in

November
-1.8

Trondheim weather in

December